Perhaps you should try some spelling variations:
sach cam » sach cap, mach cam, sach tham
cam thuc » am thuc, nam thuc, cam thu
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » hai cua, lai cua, bai cua
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
vi cua » di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach cam nang ma hoi. hieu ve cam thuc va hanh ((vi cua) or (((vai cua) OR (dai cua)))) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach cam nang ma hoi. hieu ve cam thuc va hanh ((vi cua) OR (((vai cua) OR (dai cua)))) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach cam nang ma hoi. hieu ve cam thuc va hanh ((vi cua) or (((vai cua) OR (dai cua)))) triet".
• Adding a wildcard symbol may retrieve word variants: su sach cam nang ma hoi. hieu ve cam thuc va hanh ((vi cua) or (((vai cua) OR (dai cua)))) triet*.